Reaction unit for use in analyzing biological fluids



FIG. 1 is a perspective view of a reaction unit for use in analyzing biological fluids showing our new design;

FIG. 2 is a side elevational view thereof as taken from the rear of FIG. 1;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is an end elevational view thereof as taken from the right hand end of FIG. 1. 

The ornamental design for a reaction unit for use in analyzing biological fluids, as shown. 